// Copyright 2005 The Apache Software Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package org.apache.tapestry.form.validator;
import org.apache.tapestry.IMarkupWriter;
import org.apache.tapestry.IRequestCycle;
import org.apache.tapestry.form.FormComponentContributorContext;
import org.apache.tapestry.form.IFormComponent;
import org.apache.tapestry.form.ValidationMessages;
import org.apache.tapestry.json.JSONLiteral;
import org.apache.tapestry.json.JSONObject;
import org.apache.tapestry.util.RegexpMatcher;
import org.apache.tapestry.valid.ValidationConstants;
import org.apache.tapestry.valid.ValidationConstraint;
import org.apache.tapestry.valid.ValidationStrings;
import org.apache.tapestry.valid.ValidatorException;
/**
* Validates that the user input, a string, is an email address (by checking it against a regular
* expression).
*
* @author Howard Lewis Ship
* @since 4.0
*/
public class Email extends BaseValidator
{
static final String PATTERN = "^\\w[-._\\w]*\\w@\\w[-._\\w]*\\w\\.\\w{2,6}$";
// TODO: Possible thread safety issue if the validator
// is shared across threads, because the matcher
// will be too.
private RegexpMatcher _matcher = new RegexpMatcher();
public Email()
{
}
public Email(String initializer)
{
super(initializer);
}
public void validate(IFormComponent field, ValidationMessages messages, Object object)
throws ValidatorException
{
String input = (String) object;
if (!_matcher.matches(PATTERN, input))
throw new ValidatorException(buildMessage(messages, field),
ValidationConstraint.EMAIL_FORMAT);
}
private String buildMessage(ValidationMessages messages, IFormComponent field)
{
return messages.formatValidationMessage(
getMessage(),
ValidationStrings.INVALID_EMAIL,
new Object[]
{ field.getDisplayName() });
}
public void renderContribution(IMarkupWriter writer, IRequestCycle cycle,
FormComponentContributorContext context, IFormComponent field)
{
context.addInitializationScript(field, "dojo.require(\"dojo.validate.web\");");
JSONObject profile = context.getProfile();
if (!profile.has(ValidationConstants.CONSTRAINTS)) {
profile.put(ValidationConstants.CONSTRAINTS, new JSONObject());
}
JSONObject cons = profile.getJSONObject(ValidationConstants.CONSTRAINTS);
accumulateProperty(cons, field.getClientId(),
new JSONLiteral("[dojo.validate.isEmailAddress,false,true]"));
accumulateProfileProperty(field, profile,
ValidationConstants.CONSTRAINTS, buildMessage(context, field));
}
}